Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.6%
exploitation probability
0.6%top 53% of all CVEs
observed exploitation
nono source reports it
Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize() without allowed_classes restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads to trigger gadget chains and achieve database manipulation or code execution.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Cotonti · CotontiReferences
https://github.com/Cotonti/Cotontihttps://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/comments.setup.phphttps://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/controllers/actions/DisplayAction.phphttps://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/inc/CommentsWidget.phphttps://github.com/Cotonti/Cotonti/issues/1888https://github.com/Cotonti/Cotonti/pull/1889https://www.vulncheck.com/advisories/cotonti-1.0.0-comments-plugin-php-object-injection-via-ci-parameter